# RAID Calc2 vs Docker Guard

The clearest difference is in-app purchases: RAID Calc2 at none against Docker Guard's 1. Docker Guard's advantage is update cadence (daily vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Docker Guard sells 1 one-off in-app purchase. RAID Calc2 asks for nothing beyond the download.

RAID Calc2 ships an update every 5 months, Docker Guard daily. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | RAID Calc2 | Docker Guard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Daily** |
| Size | 7 MB | 2 MB |
| Requires iOS | **26.0** | 26.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Todd Greco](https://appshunter.io/developer/395601656) | [Hans Renz](https://appshunter.io/developer/861362527) |

## What reviewers say

### RAID Calc2

[App page](https://appshunter.io/ios/app/raid-calc2/id6755641457)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Docker Guard

[App page](https://appshunter.io/ios/app/docker-guard/id6765659261)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Control Pack | $3.99 | one-time |


## Frequently asked questions

### Is RAID Calc2 free?

RAID Calc2 is free to download, with no in-app purchases.

### Is Docker Guard free?

Docker Guard is free to download, with in-app purchases available.

### Do RAID Calc2 or Docker Guard have ads?

Neither RAID Calc2 nor Docker Guard shows ads.

### Which is updated more often, RAID Calc2 or Docker Guard?

RAID Calc2 ships an update every 5 months, and Docker Guard daily. Most recently, RAID Calc2 was updated on October 16, 2026 and Docker Guard on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*